Speck Products has revealed further details of its new Fitted hard shell cases for the second-generation iPod touch and fourth-generation iPod nano. Similar in design to the company’s Fitted cases for iPhone 3G and originally announced in January, the two-piece, snap-together cases feature either a fabric- or vinyl-wrapped outer finish and cutouts for full access to all ports and controls. The iPod nano 4G models also feature a clear hard shell…